Evaluating the critical current magnitude and distribution width of tridimensional Josephson junction arrays

[摘要] In this contribution, we present a simple and effective procedure to determine the average critical current of a tridimensional disordered Josephson junction array (3D-DJJA). Using a contactless configuration we evaluate the average critical current and the typical width of the distribution through the analysis of the isothermal susceptibility response to the excitation field amplitude. chi (AC)(h). A 3D-DJJA fabricated from granular Nb is used to illustrate the method. (C) 2001 Elsevier Science B.V. All rights reserved.

[发布日期] 2001-05-01

[效力级别]  Proceedings Paper

[关键词] Josephson junction arrays;critical state models;granular systems;superconductivity